Stratus L4-2.4L DOHC (1995)
Cruise Control Vacuum Solenoid: Description and Operation
NAME OF CODE:
Speed Control Solenoid Circuits
WHEN MONITORED:
With the ignition key ON, speed control switched ON, and the SET button pressed.
SET CONDITION:
When the powertrain control module (PCM) actuates the vacuum and vent solenoids but they do not respond.
THEORY OF OPERATION:
When the "Set" switch is pressed, the vehicle must be moving forward at a speed between 35 - 85 MPH, with the transmission gear selector in
other than park or neutral. The PCM locks in a set speed. Then the PCM energizes the vacuum solenoid to open the throttle and actuates the vent
solenoid to close the throttle. These actuations are dependent on power supplied to the servo from the speed control relay through the brake switch.
The system is deactivated by pressing the brake, turning the on/off switch OFF, or vehicle speed falling below the minimum. Reactivation can be
done by repeating the previous steps or pressing resume with the vehicle speed between 35 - 85 MPH.
POSSIBLE CAUSES:
-
Solenoid control circuit open or shorted
-
Vacuum or vent solenoid shorted or open
-
Open or shorted speed control power supply circuit
-
PCM failure
